JPS5541474A - Thin type spectacle lens - Google Patents
Thin type spectacle lensInfo
- Publication number
- JPS5541474A JPS5541474A JP11559878A JP11559878A JPS5541474A JP S5541474 A JPS5541474 A JP S5541474A JP 11559878 A JP11559878 A JP 11559878A JP 11559878 A JP11559878 A JP 11559878A JP S5541474 A JPS5541474 A JP S5541474A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- spectacle lens
- boundary
- seen
- whirl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Eyeglasses (AREA)
Abstract
PURPOSE: To eliminate whirl, boundary, etc. from the spectacle lens as seen from the front side, by grinding off the optically unnecessary part in the specified range in the outer circumferential part of the spectacle lens in a specified shape.
CONSTITUTION: The optically unnecessary part 4 of a lens is ground off for the entire circumference within 5mm from the outer circumference of the back side of the lens to be shaped into a form having fitting and protruding part to join with the frame. As a result, the brim thickness of the minor lens is reduced. At the same time, the boundary between the spherical part and aspherical part of the outer circumference of the back side of the lens is eliminated, and the spectacle lens is free from whirl, boundary, etc. when seen from the front side. Thus, spectacles excelling in aesthetic effect may be obtained without narrowing the visual field.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11559878A JPS5541474A (en) | 1978-09-19 | 1978-09-19 | Thin type spectacle lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11559878A JPS5541474A (en) | 1978-09-19 | 1978-09-19 | Thin type spectacle lens |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5541474A true JPS5541474A (en) | 1980-03-24 |
Family
ID=14666576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11559878A Pending JPS5541474A (en) | 1978-09-19 | 1978-09-19 | Thin type spectacle lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5541474A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58144322U (en) * | 1982-03-20 | 1983-09-29 | 三喜眼鏡光器株式会社 | glasses lenses |
JPS6060724U (en) * | 1983-09-30 | 1985-04-27 | 中尾 勝光 | near vision glasses lenses |
US4630906A (en) * | 1982-05-14 | 1986-12-23 | Carl-Zeiss-Stiftung | Blank for eyeglass lenses having ellipse-like edge curves and means and method for selecting |
GB2612390A (en) * | 2021-07-09 | 2023-05-03 | Webb Anthony | Invisible edge lens |
-
1978
- 1978-09-19 JP JP11559878A patent/JPS5541474A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58144322U (en) * | 1982-03-20 | 1983-09-29 | 三喜眼鏡光器株式会社 | glasses lenses |
US4630906A (en) * | 1982-05-14 | 1986-12-23 | Carl-Zeiss-Stiftung | Blank for eyeglass lenses having ellipse-like edge curves and means and method for selecting |
JPS6060724U (en) * | 1983-09-30 | 1985-04-27 | 中尾 勝光 | near vision glasses lenses |
JPH0128490Y2 (en) * | 1983-09-30 | 1989-08-30 | ||
GB2612390A (en) * | 2021-07-09 | 2023-05-03 | Webb Anthony | Invisible edge lens |
GB2612390B (en) * | 2021-07-09 | 2024-01-17 | Webb Anthony | Invisible edge lens |
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